<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        em {
            font-style: normal;
        }
        div{
            /*倾斜*/
            font-style: italic;
        }
    </style>
</head>
<body>
    <em>em 标签</em>
    <div>div标签</div>
</body>
</html>